TW201008329A - Methods and systems of AGC and DC calibration for OFDM/OFDMA systems - Google Patents
Methods and systems of AGC and DC calibration for OFDM/OFDMA systems Download PDFInfo
- Publication number
- TW201008329A TW201008329A TW098119779A TW98119779A TW201008329A TW 201008329 A TW201008329 A TW 201008329A TW 098119779 A TW098119779 A TW 098119779A TW 98119779 A TW98119779 A TW 98119779A TW 201008329 A TW201008329 A TW 201008329A
- Authority
- TW
- Taiwan
- Prior art keywords
- received signal
- power
- offset
- signal
- gain
- Prior art date
Links
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
- H03G3/3078—Circuits generating control signals for digitally modulated signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Circuits Of Receivers In General (AREA)
- Control Of Amplification And Gain Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/137,546 US9219458B2 (en) | 2008-06-12 | 2008-06-12 | Methods and systems of AGC and DC calibration for OFDM/OFDMA systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW201008329A true TW201008329A (en) | 2010-02-16 |
Family
ID=40909951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW098119779A TW201008329A (en) | 2008-06-12 | 2009-06-12 | Methods and systems of AGC and DC calibration for OFDM/OFDMA systems |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9219458B2 (ja) |
| EP (1) | EP2297849B1 (ja) |
| JP (2) | JP2011524696A (ja) |
| KR (1) | KR101166138B1 (ja) |
| CN (1) | CN102057568B (ja) |
| TW (1) | TW201008329A (ja) |
| WO (1) | WO2009152394A1 (ja) |
Families Citing this family (30)
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| US8107565B2 (en) | 2009-01-28 | 2012-01-31 | Qualcomm Incorporated | Automatic gain control (AGC) for OFDM-based transmission in a wireless communication network |
| CN102113251B (zh) * | 2009-10-19 | 2015-10-07 | 爱立信(中国)通信有限公司 | 用于均衡射频滤波器的方法和均衡器 |
| KR101641926B1 (ko) * | 2009-10-20 | 2016-07-25 | 삼성전자주식회사 | 무선통신시스템에서 직류전원 오프셋 제거 장치 및 방법 |
| US8477887B2 (en) * | 2009-12-21 | 2013-07-02 | Qualcomm Incorporated | Systems and methods providing frequency-domain automatic gain control (AGC) |
| CN102348271B (zh) * | 2010-07-30 | 2014-02-26 | 富士通株式会社 | 无线通信终端以及自动增益控制方法 |
| US20120177095A1 (en) * | 2011-01-12 | 2012-07-12 | Autotalks Ltd. | Adjacent channel interference mitigation during the acquisition phase in ofdm communications |
| DE102011081245A1 (de) | 2011-03-31 | 2012-10-04 | Rohde & Schwarz Gmbh & Co. Kg | Vorrichtung und Verfahren zum Fixieren eines Verstärkungs- bzw. Dämpfungsfaktors |
| GB2492794B (en) * | 2011-07-12 | 2013-07-17 | Renesas Mobile Corp | Wireless communications |
| US8537942B2 (en) * | 2012-01-24 | 2013-09-17 | Litepoint Corporation | System and method of maintaining correction of DC offsets in frequency down-converted data signals |
| CN102665267B (zh) * | 2012-04-12 | 2015-12-16 | 华为技术有限公司 | 一种功率调整方法及装置 |
| CN102647190B (zh) * | 2012-04-18 | 2015-03-04 | 天津大学 | 适用于高斯分布信号a/d转换器最佳输入功率设定方法 |
| US8830859B2 (en) | 2012-05-10 | 2014-09-09 | Blackberry Limited | Power based gain control adjustment |
| KR101477895B1 (ko) * | 2013-03-12 | 2014-12-30 | 엘에스산전 주식회사 | 아날로그 출력모듈의 오프셋 게인 설정방법 |
| CN103199881B (zh) * | 2013-04-11 | 2015-07-29 | 海能达通信股份有限公司 | 自动增益控制方法、系统和接收机 |
| KR102083580B1 (ko) | 2013-08-09 | 2020-03-02 | 삼성전자주식회사 | 부호 검출을 위한 임계값을 결정하는 방법 및 장치 |
| US9288776B2 (en) * | 2013-11-05 | 2016-03-15 | Qualcomm Incorporated | Apparatus and method of wideband automatic gain control algorithm supporting multiple carriers with possibly different air interface technologies |
| US9647646B2 (en) * | 2014-04-22 | 2017-05-09 | Qualcomm Incorporated | Systems and methods for gain and offset control |
| CN104469925B (zh) * | 2014-11-28 | 2017-12-22 | 深圳市海思半导体有限公司 | 一种频域自动增益控制方法和装置 |
| US11212758B2 (en) | 2016-03-15 | 2021-12-28 | Commscope Technologies Llc | Gain control for a radio frequency (RF) front-end of base station |
| CN107104689B (zh) * | 2017-06-26 | 2019-06-07 | 沈阳航空航天大学 | 一种基于电波环境测试的射频接收机模块 |
| WO2020040593A1 (en) * | 2018-08-23 | 2020-02-27 | Samsung Electronics Co., Ltd. | Method and apparatus for reducing energy consumption of terminal in wireless communication system |
| WO2021032009A1 (en) * | 2019-08-16 | 2021-02-25 | Mediatek Inc. | Automatic gain control for serving cell activation based on two different reference signals |
| US10797788B1 (en) * | 2019-12-02 | 2020-10-06 | Amazon Technologies, Inc. | Reducing power consumption in a receiver of a communications device |
| WO2021165733A1 (en) * | 2020-02-18 | 2021-08-26 | Zeku Inc. | Smooth transition for data streams with adjusted gain |
| CN115152187B (zh) * | 2020-02-18 | 2023-09-29 | 哲库科技(上海)有限公司 | 流式传输符号的加权叠加实现 |
| CN114501601A (zh) * | 2020-11-11 | 2022-05-13 | 中国移动通信有限公司研究院 | 无线信号控制方法、装置、设备及存储介质 |
| TWI763219B (zh) * | 2020-12-29 | 2022-05-01 | 瑞昱半導體股份有限公司 | 資料接收方法及資料接收器 |
| US11863359B1 (en) * | 2021-05-11 | 2024-01-02 | Amazon Technologies, Inc. | Subcarrier pre-equalization technology for frequency selective fading characteristics of wireless channels |
| US12108371B2 (en) * | 2022-01-11 | 2024-10-01 | Qualcomm Incorporated | Sidelink slots without symbols for automatic gain control |
| CN115941411B (zh) * | 2022-07-04 | 2023-07-28 | 上海星思半导体有限责任公司 | 信号处理方法、装置、电子设备及存储介质 |
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| FR2713846B1 (fr) | 1993-12-07 | 1996-01-05 | Thomson Csf | Procédé de commande automatique de gain dans un récepteur radio numérique et récepteur mettant en Óoeuvre ce procédé. |
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| JP2008205956A (ja) * | 2007-02-21 | 2008-09-04 | Toshiba Corp | 受信装置、無線装置、オフセットキャンセル方法 |
| US8184737B2 (en) * | 2007-11-27 | 2012-05-22 | Korea Advanced Institute Of Science And Technology | Echo cancellation and echo channel estimation system using multiple antennas |
| US8010077B2 (en) * | 2008-04-21 | 2011-08-30 | Freescale Semiconductor, Inc. | DC offset calibration in a direct conversion receiver |
-
2008
- 2008-06-12 US US12/137,546 patent/US9219458B2/en not_active Expired - Fee Related
-
2009
- 2009-06-12 TW TW098119779A patent/TW201008329A/zh unknown
- 2009-06-12 KR KR1020117000856A patent/KR101166138B1/ko not_active IP Right Cessation
- 2009-06-12 EP EP09763682.3A patent/EP2297849B1/en not_active Not-in-force
- 2009-06-12 JP JP2011513712A patent/JP2011524696A/ja active Pending
- 2009-06-12 CN CN200980122061.2A patent/CN102057568B/zh not_active Expired - Fee Related
- 2009-06-12 WO PCT/US2009/047127 patent/WO2009152394A1/en active Application Filing
-
2012
- 2012-11-21 JP JP2012254981A patent/JP5844243B2/ja not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110017450A (ko) | 2011-02-21 |
| WO2009152394A1 (en) | 2009-12-17 |
| US9219458B2 (en) | 2015-12-22 |
| CN102057568B (zh) | 2015-08-26 |
| JP5844243B2 (ja) | 2016-01-13 |
| EP2297849A1 (en) | 2011-03-23 |
| CN102057568A (zh) | 2011-05-11 |
| EP2297849B1 (en) | 2015-08-19 |
| US20090310690A1 (en) | 2009-12-17 |
| KR101166138B1 (ko) | 2012-07-19 |
| JP2013093857A (ja) | 2013-05-16 |
| JP2011524696A (ja) | 2011-09-01 |
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